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                <time datetime="2020-03-17T15:11:42.882Z" itemprop="datePublished" class="page-time">
  2020-03-17
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            <ol class="post-toc"><li class="post-toc-item post-toc-level-2"><a class="post-toc-link" href="#公网地图最大比例尺"><span class="post-toc-text">公网地图最大比例尺</span></a></li><li class="post-toc-item post-toc-level-2"><a class="post-toc-link" href="#比例尺"><span class="post-toc-text">比例尺</span></a></li><li class="post-toc-item post-toc-level-2"><a class="post-toc-link" href="#分辨率"><span class="post-toc-text">分辨率</span></a></li><li class="post-toc-item post-toc-level-2"><a class="post-toc-link" href="#比例尺计算规则"><span class="post-toc-text">比例尺计算规则</span></a></li><li class="post-toc-item post-toc-level-2"><a class="post-toc-link" href="#google切片规则"><span class="post-toc-text">google切片规则</span></a></li></ol>
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<article id="post-gis基本原理/比例尺及分辨率换算规则"
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        <h1 class="post-card-title">公网地图最大比例尺</h1>
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            <time class="post-time" title="2020年03月17日 23:11" datetime="2020-03-17T15:11:42.882Z"  itemprop="datePublished">2020-03-17</time>

            
	<ul class="article-category-list"><li class="article-category-list-item"><a class="article-category-list-link" href="/blog/categories/GIS基本原理/">GIS基本原理</a></li></ul>



            
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            <h2 id="公网地图最大比例尺"><a href="#公网地图最大比例尺" class="headerlink" title="公网地图最大比例尺"></a>公网地图最大比例尺</h2><table>
<thead>
<tr>
<th><strong>地图名称</strong></th>
<th><strong>级别</strong></th>
<th><strong>scale</strong></th>
<th><strong>Resolution</strong>(像素/m)</th>
</tr>
</thead>
<tbody><tr>
<td>智图</td>
<td>16</td>
<td>1:9027.977411</td>
<td>2.388657133974685</td>
</tr>
<tr>
<td>天地图</td>
<td>20</td>
<td>1:564.24971667206887</td>
<td>0.149291070</td>
</tr>
<tr>
<td>Google地图</td>
<td>19</td>
<td>1：1128.49717634498</td>
<td>0.298582141738936</td>
</tr>
<tr>
<td>百度地图</td>
<td>18</td>
<td>1：3779.53</td>
<td>1.00000064</td>
</tr>
<tr>
<td>高德地图</td>
<td>18</td>
<td>1：1732.211455035507</td>
<td>0.4583142808114779</td>
</tr>
</tbody></table>
<h2 id="比例尺"><a href="#比例尺" class="headerlink" title="比例尺"></a>比例尺</h2><p><strong>Scale</strong>表示的是<strong>比例尺</strong>，即地图上的一厘米代表着实际上的多少厘米。例如地图上1厘米代表实地距离500千米，可写成：1 ∶ 50,000,000或写成：1/50,000,000。</p>
<h2 id="分辨率"><a href="#分辨率" class="headerlink" title="分辨率"></a>分辨率</h2><p><strong>Resolution</strong>表示的是<strong>分辨率</strong>。Resolution 的实际含义代表当前地图范围内，1像素代表多少地图单位（X地图单位/像素），地图单位取决于数据本身的空间参考。可见Resolution跟 dpi有关系（dpi代表每英寸的像素数），跟地图的单位也有关系。</p>
<h2 id="比例尺计算规则"><a href="#比例尺计算规则" class="headerlink" title="比例尺计算规则"></a>比例尺计算规则</h2><p>1英寸=2.54厘米；</p>
<p>1英寸=96像素；</p>
<p>最终换算的单位是米；</p>
<p>如果当前地图比例尺为1:125000000，则代表图上1米等于实地125000000米；</p>
<p>米和像素间的换算公式：</p>
<p>1英寸=0.0254米=96像素</p>
<p>1像素=0.0254/96 米 则根据1：125000000比例尺，图上1像素代表实地距离是 125000000*0.0254/96 = 33072.9166666667米。</p>
<h2 id="google切片规则"><a href="#google切片规则" class="headerlink" title="google切片规则"></a>google切片规则</h2><figure class="highlight xml"><table><tr><td class="code"><pre><span class="line"><span class="meta">&lt;?xml version="1.0" encoding="utf-8"?&gt;</span></span><br><span class="line"><span class="tag">&lt;<span class="name">Scales</span> <span class="attr">xmlns</span>=<span class="string">"http://www.supermap.com.cn/desktop"</span> <span class="attr">version</span>=<span class="string">"6.1.2"</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:591658710.909131<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:295829355.454566<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:147914677.727283<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:73957338.8636414<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:36978669.4318207<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:18489334.7159103<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:9244667.35795517<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:4622333.67897759<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:2311166.83948879<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:1155583.4197444<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:577791.709872198<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:288895.854936099<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:144447.92746805<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:72223.9637340248<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:36111.9818670124<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:18055.9909335062<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:9027.9954667531<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:4513.99773337655<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:2256.99886668827<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:1128.49943334414<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:564.249716672069<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line">  <span class="tag">&lt;<span class="name">Scale</span>&gt;</span>1:282.124858336034<span class="tag">&lt;/<span class="name">Scale</span>&gt;</span></span><br><span class="line"><span class="tag">&lt;/<span class="name">Scales</span>&gt;</span></span><br></pre></td></tr></table></figure>


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